Filter.



TI-IOMAS W. GOREAU, OF NEW ORLEANS, LOUISIANA.

lFILTER.

Speccaton of Letters Patent.

Patented May 21, 1,907.

Application filed January 25, 1907. Serial NO- 354,134.

To all whom t may concern:

Beit known that I, THOMAS W. GOREAU, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful Improvements in Filters, of which the following is a specification.

My invention relates to filters of the kind that comprise porous filtering cylinders of stone or other material and means for clearing the filtering cylinders of collected sediment without the necessity of opening the casings of the filters and it has for one of its objects to provide a iilter of the type defined embodying such a construction that foreign substance is precluded from gaining access to the pure water chamber, and yet the means for removing collected sediment from the filtering cylinder may be operated with but a minimum amount of eort and without sub jecting any of the parts of the filter to undue frictionand causing undue wear thereof.

Another object of the invention is the provision of a iilter embodying such a construction that the cylinder-cleaning devices may be readily adjusted and adjustably fixed to iit cylinders of various diameters, and to compensate for wear of a cylinder during the use of the iilter.-

The invention will be fully understood from the following description and claims when the same are considered in connection with the accompanying drawings, forming part of this specification, in which:

Figure l is a vertical section of a filter constituting one embodiment of my invention. Fig. 2 is a horizontal section taken in the planeindicated by the line 2 2 of Fig. 1,look ing downward. Fig. 3 is a detail section similar to Fig. l illustrating a modified con struction hereinafter described.

Referring by letter to the said drawings, and more particularly to Figs. l and 2, there'- of: A is the casing of my improved iilter. The said casing is circular in horizontal section, and is made up of a 4cylinder a, preferably of sheet-metal, a lower head b having an annular groove c receiving the. lower end of cylinder a and also having a gasket d arranged in said groove and in. engagement with the lower end of the cylinder with a view of rendering the connection between cylinder and head water-tight, and an upper head e having vin its under side an annular groove j and a gasket g for rendering watertight the connection between the same and the upper end of the cylinder a. The heads l) and e may be connected in any approved manner without involving departure from the scope of my claimed invention, though I prefer to effect the connection through the medium of vertical bolts e screwed into the head t and extending loosely through head e and provided above the latter with threads to receive nuts e2, the office of which is to crowd head e against the upper end of cylinder a.

B is a vertical central shaft extending through the upper head e of the casing A, and a stuffing box O carried by said head. The said shaft B may be rotated through a crank II, gearing (not shown) or other means arranged exterior of the casing without affecting my invention; and it has alower portion e3 disposed within casing A and designed to serve a purpose presently set forth,

B is a central vertical rod arranged in casing A. This rod B is provided with a lower threaded end h, turned into a threaded socket i in the head b; and it is also provided with an upper threaded end for a purpose presently described. The lower headb is provided with two conduits D and E; the conduit D being designed to conduct pure water from the pure waterchamber of the filter, while the conduit E has for its function to carry mud and other collected sediment out of the casing after the said mud'or collected sediment is removed from the filtering cylinder in the manner hereinafter pointed out in detail. The upper head e Aof the casing is provided With a conduit F designed to be connected with a street main or other source of Water supply, and is further provided With lan air cock G.

I is the filtering cylinder of the filter which is'of porous stone or other porous material calcul-ated to permit the passage of water while barring the passage of mud and other sediment present in the water when the same is let into the casing A. The cylinder I might be formed in one piece without involving departure from the scope of my invention, though I prefer to have it comprise two or more `superposed annular sections as illustrated, this in order that when one section is IOO impaired, it may be removed and replaced with a new section without entailing the loss of the other section or sections. As shown in Fig. 1 the cylinder I is arranged on the lowerl head t of casing A, and it is retained in such position through the medium of a disk J and a nut K. The disk .J is arranged on the shaft B and directly engaged with the upper end of the cylinder I and it is provided in its upper side with a tapered, ground socket c, and is also provided with anA annular groove m lwhich surrounds the socket c and is designed to receive a plurality of anti-friction balls n for an important purpose presently set forth. The nut K is turned on the threaded end of the shaft B so as to crowd packing 7c tliereagainst, and has its lower end p tapered and ground. Thus it will be seen that when the nut is turned down on the threaded portion of the shaft B to tighten the tapered and ground portion of the nut in the tapered and ground socket of the disk J, the disk will be crowded against theupper end of the cylinder I to preclude passage of water between the two into the pure water chamber M ofthe filter, and at the saine time Water or other substance will be eflectually prevented from finding its way between the nut K and disk J into the said pure water chamber M. In the upper end of the nut K is a circular aperture l which receives and serves as a bearing for the lower, circular end l of shaft B.

Q is a sleeve having a central bore r which receives the angular portion e3 of the shaft B. The lower end of the sleeve Q is chainbered to receive the nut K, and the wall of the said chamber bears at its lower end on the antifriction balls n in the race m, Whereby it will be seen that rotation of the sleeve Q incident to operation of the cylindercleaning devices, presently described, will be attended by little or no friction, and consequently there will, be no undue Wear of the several parts. Vith a view of preventing sand, grit or similar substance in the water from entering the ball race m and thereby causing undue wear, I provide the guard S on the sleeve Q, which guard is preferably conical, as shown, though it may be of any other form compatible with its function without involving departure from the scope of my invention as claimed. The 'uard extends outward and downward om the sleeve and its inner surface is arranged in close proximity to the edge of the outer Wall of the ball race m, whereby the guard is enabled to effectually prevent sand or grit from reaching the ball bearing, and this without friction between ythe guard and the mentioned Wall of the ball race.

P P are hollow arms fixed to and extending outward from the sleeve Q and carrying set screws P', and R R are endWise adjustable bars adjustably xed in the arms P by the set screws P, and designed to carry cylindercleaning devices T.

The cylinder-cleaning devices T respec- 'tively comprise a bar t fixed to and depending fromone bar R, a scraper u, preferably of channel form in cross-section, arranged ver- 7o tically against the perimeter of the cylinder I and with its edges presented to said perimeter, stems c fixed to the scraper u and extending loosely through apertures in the bar t, and springs w, which may be of any approved type, surrounding the stems i) and interposed between the scraper u and the bar t. The springs w serve to yieldingly press the A scrapers u against the perimeter of the filtering cylinder I, and hence it will be apparent 8o that when the devices T are moved about the filtering cylinder, the said cylinder will be quickly and thoroughly cleared of all foreign substance collected on its perimeter.

In virtue of the adjustable connection described between the arms P on sleeve Q, and the bars R, it will be apparent that the cleaning devices T may be readily made to properly fit filtering cylinders of various diameters; and it will also be apparent that when wear of the filtering cylinder takes place, the cleaning devices T may be expeditiously and easily adjusted and adjustably fixed to coinpensate for such wear.

In the practical use of my novel filter, water from a source of supply enters the casing A through conduitF and from the in-terior of the casing the water percolates through the filtering cylinder I and is robbed of all impurities and foreign substance so that it enters the chamber M in a pure state. From the chamber M the pure water is drawn through the conduit D as used. After the filter has been in use for a considerable period the mud and other sediment that collects on the outer side of the device I impairs the efficiency of said cylinder and retards the passage of water through the cylinder. It then becomes necessary to clear the perimeter of the cylinder, and to accomplish this the operator has but to open the valve (not show n) of the drain conduit E and then turn the crank of the shaft B so as to rotate sleeve Q, since when this is done the water entering through the conduit F Will spray the cylinder I while the blades or Scrapers u' movable around and yieldingly pressed against the perimeter of the cylinder will quickly and thoroughly remove all sediment from said perimeter, and such sediment will pass with the Water through the drain conduit E. When the cleaning of the filtering cylinder is completed the mentioned valve of the conduit E is closed, and with this done the filter Will vagain operate in the manner first de- 125 scribed.

In the modified construction shown in Fig.

3, the vertical central rod B2 is provided IOO IIO

' discretion of the manufacturer.

with a thread y" at an intermediate point of its length for the engagement of the nut K, and is extended up through head e7, and has its upper end threaded, as indicated by w for the engagement of a nut the office of which is to crowd the head e7 against the cylinder a, and the cylinder (L, in turn, against the head this with a view of" assuring water-tight connections between the cylinder and the two heads. When desired the nut a may be equipped with a set screw y for preventing casual displacement thereof. When the rod B2 connected with the upper head e7 as described is employed, the bolts e and their appurtenances may be employed, as shown in Fig. 3, or may be omitted in the It will also be seen by reference to Fig. 3, that the sleeve Q is provided with a miter gear S3, and that this miter gear is intermeshed with a miter gear W on a shaft X which extends throughV the head c7 and a stuffing box carried thereby, and is provided with a crank Y. Thus it will be seen that byturning the shaft X, the sleeve Q and the cylinder-cleaning devices T may be rotated for the purpose before described.

With the exceptions noted in the foregoing, the construction sho wn in Fig. 3 is similar to that shown in Figs. 1 and 2.

Having described my invention, what I lclaim and desire to secure by Letters-Patent, is:

l. The combination in a filter, of a casing, a rod fixed to and rising from the bottom of the casing, a filtering cylinder arranged on the bottom of the casing and surrounding said rod, a disk disposed on the upper end of the filtering cylinder and surrounding the rod and having a ball-race in its upper side, antifriction balls arranged in said race, means on the rod for crowding the disk against the upper end of the ltering cylinder, a sleeve loosely surrounding the rod and bearing on the anti-friction balls and having a guard surrounding and extending below the outer wall of the ball-race in the disk, means for cleaning the outerside of the filtering cylinder, movable in a circle about said cylinder, a connection between said means and the sleeve, and means for rotating the sleeve.

2. The combination in a filter, of a casing, a rod fixed to and rising from the bottom of the casing, a filtering cylinder arranged on the bottom of the casing and surrounding said rod, a disk disposed on the upper end of the filtering cylinder and surrounding the rod and having a circular groove in its upper side, means on the rod for crowding the disk against the upper end of the filtering cylinder, a sleeve loosely surrounding the rod and having a cylindrical portion disposed in the circular groove of the disk and also having a guard surrounding and extending below the a rod fixed to and rising from the bottom of.

the casing and having a threaded portion, a filtering cylinder arranged on the bottom of the casing and surrounding the rod, a disk disposed on the upper end ofthe filtering cylinder and having a tapered and ground socket in its upper side and also having a ball-race in said upper side around the socket, a nut mounted on the threaded portion of the rod and having a tapered and of the disk, a sleeve surrounding the rod and ground lower end disposed in the said socket chambered to receive said nut and having a guard surrounding and extending below the upper edge of the outer wall of the ball-race, anti-friction balls arranged in the race and below the lower end of the sleeve, means for cleaning the outer side of the filtering cylinder, movable in a circle about said cylinder, a connection between said means and the sleeve, and means for rotating the sleeve.

4. The combination in a filter, of a casing comprising a cylinder, a lower head having an annular groove receiving the lower end of the cylinder, a gasket in said groove below the lower end of the cylinder, an upper head having an annular groove receiving the upper end of the cylinder and a gasket in said groove above said upper end of the cylinder, a rod fixed to the lower head of the casing and provided with a threaded portion, means connecting the heads, a filtering cylinder arranged on the lower head of the casing and around the rod, a disk surrounding the rod and arranged on the filtering cylinder and having a tapered and ground socket in its upper side and a ball-race surrounding said socket, a nut mounted on the rod and having a tapered and ground lower end disposed in the socket of the disk, anti-friction balls arranged in the said race, a sleeve loosely mounted on the rod and bearing on said balls, means carried by the sleeve for cleaning the filtering cylinder, means exterior of the casing for rotating the sleeve, and a driving connection intermediate said exterior means and the sleeve.

5. The combination in a lter, of a casing, a rod fixed to and rising from the bottom of the casing, a filtering cylinder arranged on the bottom of the casing and surrounding said rod, a 'disk disposed on the upper end of the filtering cylinder and surrounding the rod and having a circular groove in its upper side, means on the rod for crowding the disk against the upper end of the Elltering cylinder, a sleeve loosely surrounding the rod and having a cylindrical portion disposed in the IOO IIO

circular groove of the disk and also having a In testimony whereof I have hereunto set guard surrounding and extending beloW the my hand in presence of tWo subscribing Witouter Wall of the said groove, bars adjustably nesses.

Xed to and extending outward from the THOMAS WV. GOREAU. sleeve, means carried by said bars for clean- Witnesses: ing the outer side of the cylinderI and means R. M. CLESKEY,

for rotating the-sleeve. J. H. MONROE. 

